Improvement in staples for hashes



J. LETCHWORTH.

Stapie fore-Harmes.

No.123,350, Patented Feb. 6,1872.

, lima-fee l FFICE.

JOSIAH LETOHWORTH, OF BUFFALO, NEW YORK.

IMPROVEMENT IN STAPLES FOR HANIES.

Specification forming part of Letters Patent No. 123,350, dated February6, 1872.

SPnorrIoATIoN.

I, J osnsn Lnrcnwonrn, of the city of Buffalo, in the county of Erie andState of N ew York, have invented a certain Improvement in Hame-Staples,of which the following is a specification.

Haine-staples have heretofore been made circular in cross-section and ofuniform diameter. As the portion of the tug-clip which engages with thestaple is of similar form, the surfaces in actual contact, to which thewear is confined, are exceedingly limited, whereby a notch or groove israpidly formed in the staple, which soon impairs its strength. Myinvention is designed to remedy this defect, and consists of allame-staple constructed with a curved recess on one side, forming aseat for the clip, and an enlargement on the opposite side conformingwith the shape of the recess, so as to impart the required strength tothe staple, as will be hereinafter fully described.

In the accompanying drawing, Figure I is a partly-sectional elevation,and Fig. II a partlysectional plan View of a hame-staple and tngclip ofordinary construction. Fig. III is a front elevation of my improvedhaine-staple, with the tug-clip in section. Fig. IV is a sectional planview thereof. Fig. V is a side elevation of my improved haine-staple;and Fig. VI represents a hame provided with my improved staple.

Like letters designate like parts in each of the figures.

A represents the round portion of the tugclip, which engages with thehame-staple, and

A its iiattened ends, between which the tug is secured. B represents myimproved hamestaple attached to the haine in the ordinary manner. bisthe recess formed in the front portion of the staple at the center so asto envelop the portion A of the tug-clip for nearly one-half of thecircumference of its cross-section, as clearly shown in Fig. III. b isthe enlargement on the back of the hame-staple Opposite the recess b andconforming' with the shape of the latter, so as to compensate for theweakening of the staple by the recess Z). The portions b2 of the staplewhich are next to the haine are preferably made iattened or oval, so asto allow of the engagement of the tug-clip with my iinproved staple,which is done after the latter is secured to the hame without requiringthe portions A of the clip to be spread more than is required for theinsei-tion of the tug. The surface in contact with the tugclip is in myimproved stap'le considerable larger than in an ordinary staple7 asrepresented in Figs. I and II, whereby an undue wear at one particularpoint is prevented and the durability of the staple greatlyT increased.

What I cla-ini as my invention is- In combination with a tug-clip, thehainestaple B, constructed with the recess b and enlargement b1,substantially as and for the purpose hereinbefore set forth.

JOSIAH LETOHWORTH. Witnesses:

JAY HYATT,

JNO. J. BoNNnR.

